Ultra-violet germicidal mask system

• US 5,165,395 A
• Filed: 02/14/1992
• Issued: 11/24/1992
• Est. Priority Date: 02/14/1992
• Status: Expired due to Term

• Current Assignee: Mark R. Ricci
• Original Assignee: Mark R. Ricci
• Inventors: Ricci, Mark R.
• Primary Examiner(s): Crowder, Clifford D.
• Assistant Examiner(s): RACITI, ERIC
• Application Number:
  US07/835,528
• Time in Patent Office: 284 Days
• Field of Search: 128/201.25, 128/202.22, 128/205.27, 128/205.29, 128/206.12, 128/206.13, 128/206.14, 128/206.15, 128/206.17, 128/202.25, 422/24, 422/2, 422/186.3, 55/267, 55/279, 55/DIG. 9, 55/DIG. 35
• US Class Current: 128/202.22
• CPC Class Codes: A41D 13/1146 obtained by moulding
• CPC Class Codes: A61L 9/20 Ultraviolet radiation
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/1065 in the expiratory path
• CPC Class Codes: A62B 18/02 Masks gas-masks for animals A62B18/06; masks for welders A61F9/06
• CPC Class Codes: A62B 23/02 for respirators
• CPC Class Codes: B01D 45/04 by utilising inertia B01D45/12 takes precedence
• CPC Class Codes: B01D 46/10 Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• CPC Class Codes: Y10S 55/35 Respirators and register filters

Abstract

A germicidal mask system to be worn by a user kills germs, viruses, or other pathogens which are located in the air to be breathed by the user. Before entering the mask, the air is exposed to ultra-violet radiation killing the undesirable germs, viruses, and other pathogens for which the ultra-violet radiation is lethal. In this manner only germ free air is provided to a user. Such a mask system would be useful to those users who are easily susceptible to contagious diseases. The germicidal mask system could also expose exhaled air from the user to kill any germs, viruses, or other pathogens exhaled by the user. Such a system would be useful to those who are continuously exposed to contagious diseases, such as doctors, or other health professionals, so as not to pass any diseases on to patients. This system also finds use in biological laboratories in order to prevent media cultures from being contaminated.

Claims

1. A germicidal mask, comprising:

a non-porous face mask attachable over the nose and mouth of a user so as to provide an airtight fit thereover;

a sterilization chamber for killing undesirable microorganism contained therein;

a first air passageway allowing air to flow between said non-porous face mask and said sterilization chamber;

a second air passageway allowing air to flow between the ambient environment of the user and said sterilization chamber; and

ultra-violet radiation generating means located within said sterilization chamber which emits radiation deadly to said undesirable microorganisms,

wherein said sterilization chamber is made from material impervious to said radiation.

2. The germicidal mask according to claim 1, wherein said sterilization chamber further comprises first radiation blocking means preventing any radiation from leaking out from said sterilization chamber into said first air passageway.

3. The germicidal mask according to claim 2, wherein said sterilization chamber comprises second radiation blocking means preventing any radiation from leaking out from said sterilization chamber into said second air passageway.

4. The germicidal mask according to claim 1, wherein both said first radiation blocking means and said second radiation blocking means comprise baffles, said baffles comprising a material impervious to ultra-violet light.

5. The germicidal mask according to claim 1, wherein both said first radiation blocking means and said second radiation blocking means comprise foam, said foam being impervious to ultra-violet light.

6. The germicidal mask according to claim 1, wherein said ultra-violet generating means comprises a miniature ultra-violet radiation lamp.

7. The germicidal mask according to claim 6, further comprising:

a battery pack for supplying power to said ultra-violet lamp, thereby activating said miniature ultra-violet lamp so as to produce said ultra-violet radiation; and

an electrical connection having a first end connected to said miniature ultra-violet lamp and a second end connected to said battery pack.

8. The germicidal mask according to claim 6, wherein said battery pack further comprises:

a rechargeable battery for supplying a direct current voltage; and

a converter having an input connected to said rechargeable battery and an output connected to said second end, wherein said converter supplies an alternating current voltage at its output.

9. The germicidal mask according to claim 8, further comprising:

means for rigidly and securely attaching said sterilization chamber to said non-porous face mask; and

means for selectively attaching and removing said battery pack to an article of clothing of said user.

10. The germicidal mask according to claim 9, further comprising a disposable moisture absorbing cartridge which may be selectively placed into or removed from said sterilization chamber.

11. The germicidal mask according to claim 8, further comprising:

a first one-way valve connected to said non-porous face mask for allowing air to exit therethrough into the ambient environment while preventing air from entering therethrough from said ambient environment;

a second one-way valve connected to said non-porous face mask for allowing air to enter therethrough from said first air passageway while preventing air from exiting therethrough into said first air passageway;

a neck strap;

means for attaching said neck strap to said sterilization chamber for allowing it to be hung around the neck of the user;

power level detecting means for detecting when the power of said rechargeable battery is low;

a battery life indicator for alerting the user when the power of said rechargeable battery is low as indicated by said power level detecting means, thereby informing the user that said rechargeable battery should be recharged.

12. The germicidal mask according to claim 11,

said non-porous face mask comprising a clear flexible plastic material,

said first air passageway comprising a flexible clear plastic hose leading from said non-porous face mask to said sterilization chamber, and

said battery life indicator comprising an indicator lamp located on said sterilization chamber.

13. The germicidal mask according to claim 12, further comprising means for rigidly and securely attaching said battery pack to said sterilization chamber.

14. The germicidal mask according to claim 12, further comprising means for selectively attaching and removing said battery pack to an article of clothing of said user.

15. The germicidal mask according to claim 1, wherein said second radiation blocking means comprises a porous filtering material.